There were some good points made on the last page, and I have to agree. What sort of choice is there today? Apple vs Microsoft? HP vs Dell? AMD vs Intel? It doesn't really matter; in the mainstream market, it all boils down to x86 vs x86.
There are no competing platforms on the (main) market. For a while, Apple stayed with PowerPC, but now that they switched, what's left? Sure, there's the Efika, AmigaOne, Natami, all of that stuff, but the fact is, those are products for a niche hobbyist market.
It may be somewhat defeatist, but my stance is that the processor architecture war was lost with Apple switching from PPC, and now x86 is so ingrained into everything that it will continue to remain the dominant platform forever. It's sad, too, seeing how x86 is a crappy architecture from a programmer's perspective.
RISC was neat. x86 won out simply because it had better marketing, better production yields at the right times, and an early start. Hell, it's even more obvious today that RISC was better, because x86 today is really just a horrifying convoluted CISC instruction set laid over a RISC core.